On the trigger_capturearea go to the outputs
Click Add
Select OnCapTeam1 (red)
Then select the name of the cap point base ('base1' is good but you have to make the cap base a prop dynamic with a name)
Then select Skin from the drop down list on the 3rd line
and then type a 1 in the parameters box (red skin)
Next, you click copy and then paste
then change onCapTeam1 to onCapTeam2 (blu)
leave the next 2 boxes alone
then in the 4th box type 2 (blu skin)