Spin edit specific variables

$gbc-SpinEditWidget-margin-ratio

Type: number

Default value: $theme-margin-ratio

Computed value: 0.6

$gbc-SpinEditWidget-font-family

Type: string

Default value: $theme-font-family

Computed value: Droid Sans, sans-serif

$gbc-SpinEditWidget-color

Type: color

Default value: $theme-secondary-color

Computed value: #212121

$gbc-SpinEditWidget-hover-color

Type: color

Default value: $theme-primary-faded-background-color

Computed value: #bbdefb

$gbc-SpinEditWidget-arrows-size

Type: size

Default value: $0.6em

Computed value: 0.6em