having trouble change the color of a .png

[nelsonmason]

I may be missing something simple, but I need to change the IG symbol and QR code to white. I am going by the instructions for the color replacement tool, but when I try to click on the black to tell the tool what color that needs replaced, I can't get the other steps to work. This is a graphic that will be a .png that is going to DTF. I am just doing 20 T shirts as a personal promo. Anyway, becasue I am going to DTF, I did't want to get into adjustment layers and upload something that won't print properly.

I am on PS 25.3.1. I am also a bit of a novice and not a power user. Maybe I rasterized a layer.......sometimes PS wants to do that? Anyway I am trying to follow the support help (link) and not getting anywhere. I grabbed the IG symbol and my QR code was generated via wix. I imported them as .png into PS. files.https://helpx.adobe.com/photoshop/using/replace-colors.html 

[creative explorer]

@nelsonmason My first thought, can you just do a 'Inverse' (Command I)... but that would turn it white but the background black. But does the background need to be white or black?

[nelsonmason]

Actually, the background needs to be an alpha channel Or they are requesting a PNG file. It's funny, but when I hit send on this thing, a bunch of junk popped up in support that said some versions of PS are no longer supporting this function.  

I don't really know how to do adjustment layers, but I guess I could do it flatten everything and export it as a PNG file and as long as it's white, it's white.

[melissapiccone]

Are the pixels already isolated on a layer so you have an alpha channel? The color replacement brush is NOT the answer. You just need to get the pixels on their own layer and then you can simply invert the colors or fill them with white. It's quite a few steps to type out. Is the current png transparent? 

[nelsonmason]

I did bring them in on separate layers.  I'm almost positive that I uploaded the PSD file so anybody could look at it and tell me if there's anything I did wrong. There is probably a black Instagram logo out there that I could grab, but my QR code is going to be a little bit more difficult.   

I first tried to use the paint tool and just tried to do a fill but for some reason it wouldn't work. 

[nelsonmason]

Also, if you have a quick training video on this, I can watch. I could probably do this myself this evening when I get home.  In the meantime, I'll google the steps you talked about.  

[melissapiccone]

I downloaded the file - yes you have everything set up correctly. Select the QR code layer and just invert - cmd/ctrl  + i to invert the color from black to white. You ahve a tiny square in there that is white and will turn black, just delete it, erase it or whatever. then do the exact same thing to teh IG logo layer and save it all as a png file. 

[nelsonmason]

This video may be what I need https://www.robertsproductions.net/photoshop-colorize-qr-code/ 

[melissapiccone]

The video is more complicated than what you need - just follow my instructions above - it will literally take you about a minute.

[nelsonmason]

Thanks for the help.  I'll do it on my desktop and after I do that small deletion, I'll just give it a scan with my phone and make sure it works.