welcome! I do love the lime green, and as has been mentioned, there's only so many different combinations for parts and colours on the Celica, so whatever you do it's always going to resemble someone elses
At least the chances of coming across another one day-to-day is very very slim.
I'm just in Loughton, shall keep the eyes peeled for a lime green car while out and about near Romford/A12 area
With regards to the lip, lowered 35 and with the C-One lip I just had to crawl over the speedbumps, and approach them at an angle, 1 wheel at a time.
I think the C-One is a fraction lower than the Greddy too, so just take your time and you'll be fine