how do i edit these?

im trying to edit the like.. "color" on the "IZZAK's blurbs" header and I gen cannot figure it out for the LIFE of me

I wanna keep the gradient but I wanna make it a diff color. i don't even know how to FIND the code OR what its called ☹️

id like to change them all but I cant even figure out how to change ONE so help me out pls pls

I've never used HTML before so someone PLEASE help me out 
this is the layout I'm currently using: https://layouts.spacehey.com/layout?id=4188



also, is it possible to ADD another section? Like is it possible to have two IZZAK blurbs?  like.. you see the blog entries, and then the blurbs, and then the friend space. is it possible to add ANOTHER section like that with a  custom header/title or nah?

srry if this is a dumb question or has been asked before