seti-syntax crashing after change it to another downloaded syntax theme

After installing seti-syntax (i'm using seti-ui), there's no problem changing between different syntax themes. After restarting Atom, if I change seti-syntax to another downloaded theme it crashes (tested with monokai-seti and atom-blue-dawn). Nothing happens when changing to default syntax themes. If I select seti-syntax again, the syntax doesn't have any color. Restarting Atom and selecting seti-syntax make it work again.

PS: this happens only using seti-ui, not with default UI themes. I just realized about that. PS2: Tested 3 times, reinstalling seti-ui and seti-syntax

I left here the error report.

[Enter steps to reproduce below:]

Atom Version: 1.7.3 System: Ubuntu 14.04.4 Thrown From: seti-syntax package, v1.0.1

Stack Trace

Failed to activate the seti-syntax theme

At 'colors.less' wasn't found in /home/heatx/.atom/packages/seti-syntax/styles/languages/json.less:-1:0

LessError: 'colors.less' wasn't found
  at /home/heatx/.atom/packages/seti-syntax/styles/languages/json.less:-1:0

Commands

     -0:21.8.0 core:confirm (atom-text-editor.editor.mini.is-focused)

Config

{
  "core": {
    "themes": [
      "seti-ui",
      "monokai-seti"
    ]
  },
  "seti-syntax": {}
}

Installed Packages

# User
activate-power-mode, v0.5.2
color-picker, v2.1.1
file-icons, v1.7.11
language-x86asm, v0.8.0
minimap, v4.23.5
monokai-seti, v0.7.0
seti-ui, v1.1.2
terminal-plus, v0.14.5

# Dev
No dev packages

jesseweed / seti-syntax