when i speedrun simpons do i need the timer were it says green or red or just a normal timer will do?

Technically no timer at all is required for a valid submission, but the timer most people use (LiveSplit) comes with an autosplitter and load remover, the latter of which is required to verify time without loads. This can save anywhere from ~20 seconds to multiple minutes depending on your PC, and it's completely free so I'd recommend downloading it if possible, but you can still submit runs without it.