Ultra violet light makes them yellow. Newspapers use a cheap quality of paper which turns yellow very fast, but this is not condsidered a problem since it is a periodical. Books are printed with a higher quality of paper, but even their pages will turn yellow eventually.
You can change colour settings, but normally it is white when it is selected.You can change colour settings, but normally it is white when it is selected.You can change colour settings, but normally it is white when it is selected.You can change colour settings, but normally it is white when it is selected.You can change colour settings, but normally it is white when it is selected.You can change colour settings, but normally it is white when it is selected.You can change colour settings, but normally it is white when it is selected.You can change colour settings, but normally it is white when it is selected.You can change colour settings, but normally it is white when it is selected.You can change colour settings, but normally it is white when it is selected.You can change colour settings, but normally it is white when it is selected.
yellow
Yellow and white
Yellow and white mixed together make a light, pastel shade of yellow.
Margarine was white and came with a yellow color packet to change it to the color of butter.
Red, White and pink
It didn't exactly change - both white and yellow balls are approved for use by ITF. The currently used colour (fluorescent yellow) was introduced in 1972 because it was better visible on TV sets.
Yellow
pink
either white or a dull yellow colour
lemon or light yeloow
The colour of the emerging beam of light will be white because yellow is a complimentary colour and every hue has a complimentary colour when added to it will result in white.