Check the black spots

She's getting color, no need to worry She's absolutely fine. Best of luck 👍

Purple is not really a phenotype. Purple is a light refraction property of an environmentally evolved molecule (a water-soluble flavonoid) that allows plants to regulate light like we use sunscreen. Imagine a plant that is pure purple, like a black domina: it doesnt start out that color as a seedling. If I grow one domina in very low light, and one in very bright light, it can affect the 'color' purple. Now grow one in very acidic soils, the other in very basic soil: two different color ranges will be seen...like growing hydrangeas where you get pink or blue flowers. There is no 'pink phenotype' of a hydrangea. ;) Organic Chemistry is the ultimate playground for gardeners.

Phytochemicals are a great indicator of your PH, and this color looks good. -- "Anthocyanin molecules will change their color depending upon the pH of their environment thus it may serve as a pH indicator. The anthocyanin turns red-pink in acids (pH 1-6), reddish-purple in neutral solutions (pH 7) and green in alkaline or basic solutions (pH 8-14) (Fossen et al., 1998)"

Yeah, it looks like a purple pheno but with this quality of photograph you can't really say... A real close up would be of benefit.

Honestly can not see anything in your picture. A close up, really close up, of the exact problem would help immensely in being able to try and solve your question.

would say it look like you got a purple phenotype.