Add more visual variety to the Ribbon
Excel 2010 got this part right. The Ribbon was slightly darker at the bottom than at the top. Selected icons and icons that were hovered over were orange, which contrasted well against the background. Most of the icons had shadows under them. The Formula Bar contrasted against the Ribbon above and the sheet below.
This visual variety made Excel 2010 look more inviting than Excel 2016. Microsoft Excel is already a boring program to use and a difficult program to learn, and the new flat design and low contrast only make Excel 2016 look boring too.
Please add more visual variety to the Ribbon.
Strongly agree - Throughout the ribbons and QAT, more of the old icons have colorful fills, whereas the new icons are mostly lines without any fills, and those that have fills are monochromatic. The multiple colors and fills make it much easier to spot which command I'm looking for on my customized QATs, which are filled to capacity. We should have the option to get the easier icons back.