Clarification on lavender vs lilac vs silver?

[Percipen]

I get really confused on the difference between the 3. I have a pair of indian runners hatched from a pair of blues. I've been told they're lavender and I've also been told they're silver and I'm curious about lilac bc it looks very similar to the other 2. My hen is on the top/right side. She has a lot of beige on her body with a little grey mixed in with it. My drake is mainly white with specs of grey. I should mention that these 2 are almost 7 weeks, so they do still have another molt before they have their adult feathers. Thanks in advance!

 

[All4Eggz]

@DucksAreBest

??
I dont know much about ducks...

 

[DucksAreBest]

Hmn, I'm not very good with colors. @Isaac 0 @Pyxis?

 

[Percipen]

@MagpieDucks are you familiar with the differences between these colors?

 

[Pollo Blanco]

I'm not an expert on chroma, hue, or shade, but those look like champagne silver to me!