Whilst MGIV does not exhibit much of a colour change in Selenenium I have found that Ilford Art 300 does change colour. I was slightly intruiged by this as I undrstood that Art 300 was Ilford MGIV emulsion coated on to Hannemule paper. Attached scans show what I mean. IlfordMGArtuntoned.jpgIlfordMGArtselenium.jpgIlfordMGArtgold.jpg