After seeing a forum post I made this modified Silhouette Thumbnail Menu.
It shows monochrome thumbnails but changes to colour on mouseover.
The key to this was to make a copy of the node image.
Then in the copied node image add a greyscale filter to the CSS Styles.
Code: Select all
-webkit-filter: grayscale(100%); /* Safari 6.0 - 9.0 */ filter: grayscale(100%);
For more filters see this website: https://www.w3schools.com/cssref/css3_pr_filter.asp