Beautify GUI and complete missing layouts and designs from a one page program Delphi App

Objective Create a standalone program to Display POS data to customer facing screen in a elegant nice way, as the sale is being rung up I’m including a shell of the program I did start to write myself, you can use this or start from scratch. Also is included a program that mimics the POS in order to generate the JSON message The JSON is being send from the register to the display program using windows APImessages this is alredy done) If you believe FMX is better for this job explain please why. I have programmed some basic screen design. this design needs to be enhanced and done with 3 different styles. Included the BlueMagic in your proposal I would then send you a link to download whats needed for this job I'm using devex DbGrid but this can be changed if you dont have it or you select to do this in FMX The screen is a client facing register screen - You may send your nicest screens you did