Different overlapping coloured lettering

Using X6.  Could someone explain the easiest way to colour overlap lettering where not only each letter is a different colour but the over lap portions are as well please? EG: 1st letter Red, 2nd letter green but the overlapped portion is blue.

I just can't seem to figure it out yet I know I should be able to do it.

For anyone living in the UK the ITV logo is an example.