General Chat

PP
the colours generated by the computer screen are what is called 'aditive light'
the colours generated by printing is called subtractive light.
The colours used on a computer are red blue green and black .. not yellow as I originally said, sorry its been a long time since I studied this..
What you are experiencing is screen glare off the covering of your PC screen.
Also white is not a shade.... fact , to obtain shades of white you have to add extra of one other base colour
white either absorbs all colours of the spectrum and reflects them equally , as in printing or generates all colours of the spectrum equally as in computer screens

Edit
RR def a bit of a blue hue on here ;-)

Neubie, I am not experiencing problem with the screen glare

Since GR changed it i have had no problems with the white background on GR

I never said that white was a shade,

I said that their are 25 to 30 thousand shades of white ( Fact )

I know that white is a colour and needs other colours to be added to acquire another shade but they are as i said different shades of white just as their are different shades of green or black all of which will either reflect or absorb light in different ways depending on their environment

I have no idea about how colour works within a computer screen but as i said before when this new makeover was introduced it was far to bright for me the glare was unbearable but GR have changed it and i personally don't have that problem any more but others obviously do

Roy

White is a color, the perception of which is evoked by light that stimulates all three types of color sensitive cone cells in the human eye in nearly equal amounts and with high brightness compared to the surroundings. A white visual stimulation will be void of hue and grayness.[1]

White light can be generated in many ways. The sun is such a source, electric incandescence is another. Modern light sources are fluorescent lamps and light-emitting diodes. An object whose surface reflects back most of the light it receives and does not alter its color will appear white, unless it has very high specular reflection.

Since white is the extreme end of the visual spectrum (in terms of both hue and shade), and since white objects - such as clouds, snow and flowers - appear often in nature, it has frequent symbolism. Human culture has many references to white, often related to purity and cleanness, whilst the high contrast between white and black is often used to represent opposite extremes.

from http://en.wikipedia.org/wiki/White

Roy

Roy , I am not getting into an argument about the true colour of white.
I am just relaying what I was taught as a City and Guilds Printer during my training.
I could list a load of site references but as you rightly point out , people are finding the new design uncomfortable .
I also even now find the contrast too extreme , ten minutes and I have to look away. I don't have any visual problems , so for those that do it must be really user unfriendly.
:-|

Neubie, Who's arguing? i thought it was a debate and i too have C&G qualifications and working with colour, I worked for ICI colour matching for the car industry and yes it was also a very long time ago but their are things you never forget,

Just hope GR continue to work on getting this problem sorted out for all users

Roy

The elements of an LCD screen are red, blue, green. There is no black. White /black uses the polarity of the pixels.

The color space of an LCD screen is rather less than that of a typical CRT flat screen (24 bit v 32 bit color space) which is why professionals stayed with CRT a lot longer than office / home user. Professional 32 bit LCD is now available, at a price. Either way monitor color space is way less than the human eye and a lot less than paint or advanced printing. Monitors which are calibrated to support Pantone printing will be well out of your budget comfort zone.

LCD brightness is a lot less than CRTs which is why they are so useless in sunlight. There is no real fix for this. Mobiles / tablets are moving to other screen technologies.

Human perception of "sharpness" is largely a function of color depth rather than pixel resolution. That is why 1080i TV at any distance beyond a few feet looks little different to 720. As I have posted Microsoft make use of this to improve font sharpness using "ClearType". If you have XP make sure that clear type is enabled.

Given that most people now use LCD and they are (a lot) less bright than CRT why the wailing about too much white on Gru? Well human vision is very subjective. Contrast is not seen as an absolute thing but relative hence pale turquoise on white was pretty well certain to raise a cheer (not).

Changing the brightness setting of the LCD monitor is a waste of time as the contrast ratio will be unchanged. However it does help to ensure that the screen is properly set up so many run with the factory default ...

What can make a difference if you encounter such a problem and are unable to impose a different CSS is to change the gamma settings. You can do this with the control panel screen settings.

That Gru claims that the proposed color scheme was ok on a walk through was unfortunate to say the least. There are plenty of software tools with which to measure proposed web designs for color / contrast acceptability and well defined standards too. These have been ignored.

A sort of fix has been implemented but is inconsistent. An analysis of the Gru DOM color scheme suggests little if any project management (it is chaotic).

Under current UK / EU law Gru has a legal duty to ensure that its product is as accessible to anybody with impaired vision as the normally sighted. This includes the old (who tend to suffer from "floaters" and find flat white nasty), those who suffer from migraine and epileptics. Moreover this duty also applies to people unable to use the mouse who depend on the keyboard. Gru do not have to develop themselves suitable add ons but they could and should facilitate standard add ons such as screen styles, screen readers etc. which they have signally failed to do.

I suppose if Gru made cars you could have any color you liked, so long as it was black. As they don't you can have off white. There is no technical problem in offering users a choice of color schemes so I guess that it is corporate (12 people corporation) that we all have the new house colors.

My take is that Gru are woefully understaffed. They are trying to do all the right things but are running against the tide.

Way to go Gru.

My take on this is basically the same as you Rollo,

Large companies often like to maximise profits by making staff work on a shoe string budget and not enough staff for the work load

Been their done that and got the T shirt to prove it

Roy

The question was not what colours are used in Printers, Computers or screens, The poster of the thread asked

JUST ASKING IF THE BRIGHTNESS WOULD AFFECT
CERTAIN TYPES OF EPILEPSY?

I have to say YES it does

5EXY, So in future we should all just answer YES or NO when asked a question

This is a general chat board and not a survey with tick boxes to give a yes or no answer and the OP never stated that a yes or no answer was the only option and the OP never asked for only members who have epilepsy to comment so their for it is open to debate,

You have posted several times on this thread with your input and point of view

I as do others have valid points of view/input and i will post my opinion whether you like it or not

Roy

Well you're stalking me pmsl

& that's making me nauseous but the glare from the screen is triggering some symtoms, however, unlike some I will not go into detail- as you have such an interest I'd recommend the Epilepsy UK site, at least if you read about it you'll know what you're talking about...for a change :-D

EDIT- you're comments are very interesting Roy- I just keep being asked the same question by the same person so give the same answer.

I can assure you I am not Stalking you or anyone else so don't flatter your self

I read the boards and if i have anything to add i will add to the thread

End of

Roy

that was for aivlyS
your comment crossed as I replied.

End of
Ron (not flattered)

5EXY, Then if it was meant for a specific member may be it would be better to have addressed it to that member

Roy

Liquid crystal screens

Liquid crystal display (LCD), light-emitting diode (LED) and thin-film transistor (TFT-LCD) screens all use liquid crystals to create a picture. They are all thin and have a flat screen.

Liquid crystal screens don’t flicker and are far less likely to trigger a seizure than CRT screens. However, the risk of having a seizure is not removed entirely, because they are brighter and have more contrasting colours than CRT screens. Contrasting colours increase the risk of seizures.

I take the recommended breaks...

Oh so it is not affecting you then as you originally said it was ??

Aivlys errrm Yes it is so I'm taking the recommended breaks- I can't think how to explain it more simply for you??

Indeed Roy apologies for that

FGS... another Saturday night ,and it not the time for fighting :-|

Dizzi asked a simply question.

Peeps responded differently, some saying how the screen affected them or not,
some giving technical details ..which are always helpful, and informative....some giving different opinions , but that's life

Please don't get in an argument about it . Debate ..yes !. Negative argument no thanks.
Sandie.

Everybody should take rest breaks from staring at a pc screen. More so if the person does suffer health difficulties of any kind.

I would imagine as an epileptic one would be encouraged use a filter screen for the wide variety of site which could affect them. After all, many sites use flashing ads which could also cause problems.

Absolutely correct Mildred .. this is just think the worst scenario possible .. people sitting at their comps having fits I seriously doubt it ... if people are concerned do as Genes is asking send the feedback and give them a break ..

Well done to the reporter . .. does it feel good to pretend this is your site and you are running it ?