Color Overlay is a filter which puts a tint on your browser viewport to make text more readable. Color and opacity are fully configurable. This could be used by people suffering by visual distortions reading the content on the normal background (Scotopic Sensitivity Syndrome).
This post was originally published on this siteColor Links is an excellent enhancement for color deficient users. The ability to control the color of the visited site link, improves the visual comfort of the search by creating a color contrast that is appealing to the user.
This post was originally published on this siteGraphics card basics . Your graphics card (also called a video card) is the hardware that creates the images shown on your monitor. This card does much of the work involved in calculating and drawing the 3D world for applications like the Second Life Viewer.