What is this ink, weather, skin? Or software?

Introduction to Baidu:

RainMeter was originally a system status monitoring software. Because of its strong customization and expansibility, many users have developed hundreds of plug-ins and skin styles on the original basis, making Rainmeter almost a perfect system beautification tool. It is favored by many beautification lovers. Rainmeter skin mostly adopts abstract and concise design route, which is very suitable as a desktop beautification software. Now its functions have been greatly expanded, and it can realize common functions such as rss feeder and email monitor, but its resource occupation is low, its design method is simple, and it has won a large number of users.

I am also using this software, and the weather is very cool. I have several sets of skin care if necessary.