In the 1980's Micarta and particularly "white" micarta was popular because it was inexpensive to be used by the maker and offered a nice material for scrimshanders to work with. Because after a period of time it became drastically discolored it lost favor and even the greens and maroons were not used so much and most collectors today would prefer other handle materials.
Here is a piece by Peter Willis that was added to our collection in 1981 and while it is nicely colored in the photo, I suspect it might have been my error in post production as I decided to look at where it is now stored (a drawer with other Canadian makers knives) and the discoloring is much less and the handle has variations as it is rotated but seems to be more yellow.
a second piece is done by Wolfe as an early knife and was a birthday present to my wife and the scrim is done by Charles Hargraves in a similar time period.
The current color of the micarta is darker on the scrimmed side than on the reverse which is to be expected as that side would be exposed to the light more.
Unfortunately, over time lots of materials do change due to light but ivory micarta is one material which is more prone than others and many collectors including myself likely would not select it to be a material chosen for a knife today.