Hue

Hue recolours every selected emitter in one drag. It shifts each colour of each gradient and leaves the gradient’s markers where they are. The panel opens from ≡ ▸ Tools ▸ Hue. Its header reads HueChanger.

What it makes possible:

A fire turned to ice. Drag H until the orange reads blue. Every gradient keeps its markers and its order.
A whole Folder of effects recoloured to match a new level, in one drag.
A pack greyed or darkened to sit in a night scene. Drag S up, or V down.
A Beam with several Blender states shifted in one go, with no state opened.

Opening and closing

To	Do this
Open the panel	Press ≡, then Tools, then Hue.
Close the panel	Press Hue again, or press X in the header.
Fold the panel away	Press the minimise button beside X. A chip appears in a row under the HUD.
Bring the panel back	Click the chip.

The panel folds away by itself when nothing the plugin can edit is selected. It returns when an emitter is selected again. A panel folded by hand stays folded until its chip is clicked. Panels describes folding in full.

The controls

The panel holds three upright sliders, each on a coloured track, with a letter under it.

Control	Track	Starts at	What it does
H	A rainbow	The middle	Turns every colour around the colour wheel, up to half a turn either way.
S	White at the top, full colour at the bottom	The middle	Dragged down, adds saturation. Dragged up, removes it.
V	White at the top, black at the bottom	The middle	Dragged up, brightens. Dragged down, darkens.
Apply			Keeps the colours shown and returns the three sliders to the middle.
Reset			Puts the old colours back and returns the three sliders to the middle.

The middle of each slider means no change. The sliders have no number readout and no box.

Which way each slider runs

H turns the hue. Above the middle the colours turn one way round the wheel. Below the middle they turn the other way. Either end is half a turn: red becomes cyan. A hue that passes the end of the wheel comes round again from the other side.

S sets how strong the colours are. The top of the slider removes all saturation and leaves greys. The bottom gives full saturation.

V sets how bright the colours are. The top gives full brightness. The bottom gives black.

Saturation and brightness stop at their limits. A colour that is already fully saturated gains nothing more from S. A pure white or a pure black gains no hue from H.

What Hue acts on

Hue acts on the Studio selection. A selected Folder, Model or Attachment brings in every emitter inside it. Emitters nested inside a selected emitter are recoloured with it.

On	Hue changes
Every emitter type	Every colour row, whatever its name: Color, TintColor, Fill Color, Outline Color, ImageColor, Decay and the rest.
A Beam emitter or a Trail emitter	The colour of every Blender state.
A stock ParticleEmitter, Trail or Beam	Its Color.

Each marker of a gradient has its colour shifted. The markers stay at their places, so a gradient keeps its shape.

All three sliders act on every colour alike. To change one marker of one gradient, use the colour editor.

Preview, Apply and Reset

To	Do this
Try a shift	Drag a slider. The selected emitters take the new colours as the slider moves. Nothing is kept yet.
See the old colours again	Return the three sliders to the middle.
Keep the shift	Press Apply. The change is one step in Studio’s undo history, named Part-Icles: Hue Shift.
Throw the shift away	Press Reset.

A preview is always worked out from the colours the emitters had before the drag. One press of Apply keeps the setting of all three sliders.

A preview is thrown away when the panel leaves the screen. That happens when the panel is closed, folded away, or folded by the plugin. The old colours return, and the three sliders return to the middle.

Limits

The sliders are set by eye. An exact amount cannot be typed.
Hue changes every colour row of the selection. There is no list to pick rows from.
A gradient keeps the number and the places of its markers. Hue changes colours only.