https://brandcolors.net/ This site is not a tool but, it shows the color combination of famous brands. If you are trying to choose color for DP, I think this site can help you!!

I think in javascript, even with one pixel movement, the mousedown and mouseup is not translated to click event.

I found an issue about changing the threshold to some pixels in Github. https://github.com/bevacqua/dragula/issues/259

I think it's hard to read black texts with blue background because of bad contrast.(Visibility&Readability)

Spring framework is one example of MVC Pattern This image is workflow of Spring.

I am worried that giving up a task and going on to the next can cause an inaccurate result because in some tasks, the previous steps can be background to do the next step.

What can be some examples of pie menus? I think it's hard to find pie menus rather than linear menus.

https://www.theverge.com/2015/2/23/8089387/microsoft-windows-10-new-icons

I think this link can be a relevant article