If it's still in the pot, it's probably root bound, Also probably needs a nice shot of balanced fertilizer. Looks fairly good to me. elaine

The blueing/dark color on the leaves indicate to me that the plants are not getting/uptaking nutrients adequately . In my opinion 9C (=48F) was not and is not cold for tomato plants PROVDED you hardened them off , for several days, prior to planting. The second issue is the soil temperatures. In order for the plants to be able to uptake nutrients, a minimum soil temperature is required . 50 -55F ? ( = 12 C) should be ok. Again, in the hardening off process the roots also are introduced to cool temperatures gradually, so when they are placed in cool soil ( 10 -12C) they won't get a shock.. MY Recent Experience: On 4/8, 9, 10/15 I planted bunch of tomato plants, some with protection some withoiut. In the following week we had lows going down to 38F ( =3.5 C) .few nights. I have seen no ill effects. BUT before planting out I did check the soil temperature. It average around 52F. So far our average lows have been 42-43F. My plants are normal, though they are growing very slowly. I have seen buds on several of them. I think your plants should rebound. I would water them with lukewarm water (~ 26-27C). When I want to water mine, i fill watering cans and let the warm up in the sun for several hours. Warmer water will raise soil temperature and help dissolve the nutrients better for the plants uptake. JMO Sey

Dampish?? Any rivers nearby?? In which case it may be Impatiens glandulifera aka Himalayan Balsam. Not many Impatiens it could be where you are. Hold on, are you THE Jarrajim?? Or is that Owld JJ?

That is not a Coffee plant. It looks like a Shooting Star Clerodendron.