Make the toolbar and timeline icons look 3D again

[Ceecis]

All the toolbar icons are a lot harder to "read" than they were before because they have lost the contour lines that defined their features and there is barely a difference between the shades of blue used to differentiate the various features in the icons. The result is that they look like flat blue shapes, especially when they are scaled down in the timeline and they are much harder to immediately recognize. Blue is also the most difficult color for the healthy human eye to see and to be able to distinguish various shades of. These icons are made even harder to read by the fact that you chose more saturated shades of blue. If you wanted this update to be friendly to the visually impaired, you did a really bad job. May I also remind you that this is a software for 3D modeling and that attempting to make these icons look "modern" by following the current fad which is to make everything look flat, is functionally inappropriate? These new icons are a step down.

[Ceecis]

To illustrate how much harder the new icons are to read, I did a blur test :

Both sets of icons had the same level of blur applied as a group. As you can see, the old icons retain their distinctive features despite the blur. The new icons, not so much. It's not even possible to tell that the pipe is a pipe. It's not even possible to tell that the fillet is a fillet. The sphere has to be interpreted as being a sphere, because it is not readily apparent that it's a sphere at first glance either. When quickly scanning the icons in the timeline, the new icons are much harder to recognize and differentiate from one another. I placed the cylinder, the box, the merge and the extrude icons next to each other on purpose as they are the worst offenders. I would also like to point out that the split and split face icons look almost the same. Icons should should be clearly distinct from one another especially since they aren't merely used as stationary icons in a toolbar, but also in the timeline where users cannot find their location from memory.