Graffiti is kinda useless on an ECS Amiga because the bandwidth is so slow.
No point changing Denise as the Indivision is an FPGA version of Denise (aka CloneA) which renders your original Denise redundant.
I bought the indivision ECS as a Scan Doubler (I haven't received it yet) but when I read that it could do more cool stuff (like graffiti graphics 256 color out of 12bit palette) and 256 color WB with Picasso96 it would be fun just to play. I am well aware that this will be very very slow, but it would still be fun. However graffiti may be useful for picture rendering or ADPro etc where speed does not matter. Again this is mostly for fun.......
Also it is useful to know that I don't need to waste one of my ECS denise for the indivision. I have a spare one, but I could put this in another amiga.
I thought maybe here.....
http://www.a1k.org/forum/showthread.php?t=31402
BTW, let us know if this procedure actually works!!!! 
Also, would it be possible to make these files available to those of us that don 't have an A1K acct?
I would like to see if this really works!
PIC96IECS_0.1a.lha
PIC96IECS_0.1b.lha
PIC96IEC_0.2.lha
indi.card.0.2c.lha
indi.card.02e.lha
indi.card.02r.lha
indi.card_02s.lha
indi.card.02v.lha
indi.card.02w.lha
This I don't know.... 
I installed an ECS (SuperDenise) Denise in my A2K with the IndiECS and it had no advantage. (I need to pull that back out!) :hammer:
From Jens' WiKi page: Indivision ECS can display the ECS screenmodes even on systems that only have an OCS Denise chip, the only requirement is an ECS Agnus chip (which is usually present in all Amiga models made in 1990 or later).
I was kinda of hoping you would know were to get these indi.card files without making a A1k.org account. (my German "Deutsch" is a bit rusty, I haven't used it in over 20 years.)
Again thanks for the info about the ECS denise, I will not waste using with the indivision and will opt to go with a OCS denise.
Motormouth,
Don't know how you can get can get better than that with ECS 16 colors at 600x800 even with a graphics card. Does the program support RTG? be real. Indie is not a graphics card. Sure makes old games look good!
Chris
If you read Oldsmobilie_Mike include links in this thread you can get 256 color WB with the Indivision ECS, but it is very very slow. People were using the 16 color 800x600 WB for two reasons, one it is reasonably fast and two you don't need picasso96. The original Graffiti was a planar to clunky graphics converter. So in theory you can do RTG, the problem is of course it is slow. Note: This is all theoretical to me. I haven't received my indivision ECS yet so I have not performed the empirical experiment yet.