threats fumbles crits and colors

I am sure this is not newe but i am, most of the stuff i see pertains to something with a premade character sheet but i like having macros at the bottom of my page. problem is i am trying to make on that will show my +2 keen scimitar. the threat range is 15-20 a 1 is a fumble. want the confirmed threat to be in green while the fumble is in red. here is the macro i have gotten to work so far but doesnt really do what i want for the threat and crit. it only shows on a 20. the fumble on 1 seems to be working though. can anyone help.     /me +2 Scimitar Attack:[[1d20 + 11 ]] for [[1d6 + 5 ]] Dmg 2nd Attack:[[1d20 + 6 ]] for [[1d6 + 5 ]] Dmg

You can use the cs syntax ti modify critical chances (cf modifies fumbles, but you dont need to modify that here), so Attack:[[1d20 + 11 ]] for [[1d6 + 5 ]] Dmg becomes Attack:[[1d20cs>15 + 11 ]] for [[1d6 + 5 ]] Dmg Note that in roll20, > means "equal to or greater than", not just "greater than"

thank you i will add this. I am trying to get a firm grip on macros and this is a good start.