osu!catch fruit can appear very faint (or almost invisible) on argon skin with dark combo colours due to additive blending applied

[bdach]

Reported on forums in https://osu.ppy.sh/community/forums/topics/2231414?n=1.

See video:

Screen.Recording.2026-08-04.at.11.42.58.mov

Cause apparent from BlendingParameters.Additive specs on

osu/osu.Game.Rulesets.Catch/Skinning/Argon/ArgonFruitPiece.cs

Lines 46 to 75 in 7bc8908

	new CircularBlob
	{
	Anchor = Anchor.Centre,
	Origin = Anchor.Centre,
	RelativeSizeAxes = Axes.Both,
	Blending = BlendingParameters.Additive,
	Alpha = 0.15f,
	InnerRadius = 0.5f,
	Size = new Vector2(1.1f),
	Seed = largeBlobSeed,
	},
	new CircularBlob
	{
	Anchor = Anchor.Centre,
	Origin = Anchor.Centre,
	RelativeSizeAxes = Axes.Both,
	Blending = BlendingParameters.Additive,
	InnerRadius = 0.2f,
	Alpha = 0.5f,
	Seed = RNG.Next(),
	},
	new CircularBlob
	{
	Anchor = Anchor.Centre,
	Origin = Anchor.Centre,
	RelativeSizeAxes = Axes.Both,
	Blending = BlendingParameters.Additive,
	InnerRadius = 0.05f,
	Seed = RNG.Next(),
	},

Not attempting a fix myself because fixing requires design direction. cc @peppy