Yeah it's just for looks, and it's totally a matter of opinion, but I personally feel that LED indicators with the instant on/off give the car a more modern and luxurious look. And it pleases my OCD
That's just me though. It's all a matter of personal taste how you want to style your own vehicle. The switchback front turn signal LEDs greatly enhance the look in my opinion. They're white, the same white as the headlights, when being used along with the headlights, but when the turn indicator is switched on, it flashes orange and off, so you get the good looks of LED turn signals, along with a white light in the front instead of the gross looking amber that just makes the car look cheap in my opinion.
https://www.amazon.com/gp/product/B00YDN4NQW/ref=oh_aui_search_detailpage?ie=UTF8&psc=1